Aerospace series - Passivation of corrosion resisting steels and decontamination of nickel base alloys

This standard specifies several chemical methods of passivation for corrosion resisting steels (austenitic, ferritic, martensitic and precipitation hardenable) and of decontamination for nickel or cobalt base alloys.

Luft- und Raumfahrt - Passivieren von korrosionsbeständigen Stählen und Dekontaminierung von Nickellegierungen

Diese Norm legt mehrere chemische Verfahren zum Passivieren korrosionsbeständiger Stähle (austenitisch, ferritisch, martensitisch und ausscheidungshärtend) und zum Dekontaminieren nickel- oder kobaltbasierter Legierungen fest.

Série aérospatiale - Passivation des aciers résistants à la corrosion et décontamination des alliages base nickel

Le présent document spécifie plusieurs méthodes de passivation chimiques des aciers résistants à la corrosion (austénitiques, ferritiques, martensitiques et durcis par précipitation), et de décontamination des alliages base nickel.

Aeronavtika - Pasiviranje korozijsko odpornih jekel in dekontaminacija nikljevih zlitin

Ta standard določa več kemičnih metod pasiviranja korozijsko odpornih jekel (avstenitna, feritna, martenzitna jekla in jekla z možnostjo izločevalnega utrjevanja) ter dekontaminacije nikljevih ali kobaltovih zlitin.

General Information

Status
Published
Publication Date
07-Jan-2020
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
08-Jan-2020
Completion Date
08-Jan-2020

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SLOVENSKI STANDARD
SIST EN 2516:2020
01-marec-2020
Nadomešča:
SIST EN 2516:2001
Aeronavtika - Pasiviranje korozijsko odpornih jekel in dekontaminacija nikljevih
zlitin

Aerospace series - Passivation of corrosion resisting steels and decontamination of

nickel base alloys
Luft- und Raumfahrt - Passivieren von korrosionsbeständigen Stählen und
Dekontaminierung von Nickellegierungen

Série aérospatiale - Passivation des aciers résistants à la corrosion et décontamination

des alliages base nickel
Ta slovenski standard je istoveten z: EN 2516:2020
ICS:
49.040 Prevleke in z njimi povezani Coatings and related
postopki, ki se uporabljajo v processes used in aerospace
letalski in vesoljski industriji industry
SIST EN 2516:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 2516:2020
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SIST EN 2516:2020
EN 2516
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2020
EUROPÄISCHE NORM
ICS 49.040 Supersedes EN 2516:1997
English Version
Aerospace series - Passivation of corrosion resisting steels
and decontamination of nickel base alloys

Série aérospatiale - Passivation des aciers résistants à Luft- und Raumfahrt - Passivieren von

la corrosion et décontamination des alliages base korrosionsbeständigen Stählen und Dekontaminierung

nickel von Nickellegierungen
This European Standard was approved by CEN on 11 November 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2516:2020 E

worldwide for CEN national Members.
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SIST EN 2516:2020
EN 2516:2020 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms and definitions ................................................................................................................................... 4

4 Purpose of process ......................................................................................................................................... 4

5 Applicability and limitations of the process ......................................................................................... 4

6 Information for the processor .................................................................................................................... 5

7 Condition of the parts prior to processing ............................................................................................. 5

8 Pre-treatments ................................................................................................................................................. 5

9 Treatment .......................................................................................................................................................... 6

10 Required characteristics and inspections.............................................................................................. 7

11 Quality assurance ............................................................................................................................................ 8

12 Health, safety and environmental aspects ............................................................................................. 8

13 Designation ....................................................................................................................................................... 9

Annex A (normative) Recommended passivation solutions ...................................................................... 10

Annex B (informative) Standard evolution form ............................................................................................ 12

Bibliography .................................................................................................................................................................. 13

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SIST EN 2516:2020
EN 2516:2020 (E)
European foreword

This document (EN 2516:2020) has been prepared by the Aerospace and Defence Industries Association

of Europe — Standardization (ASD-STAN).

After enquiries and votes carried out in accordance with the rules of this Association, this Standard has

received the approval of the National Associations and the Official Services of the member countries of

ASD, prior to its presentation to CEN.

This document shall be given the status of a national standard, either by publication of an identical text

or by endorsement, at the latest by July 2020, and conflicting national standards shall be withdrawn at

the latest by July 2020.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,

Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,

Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North

Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United

Kingdom.
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SIST EN 2516:2020
EN 2516:2020 (E)
1 Scope

This standard specifies several chemical methods of passivation for corrosion resisting steels (austenitic,

ferritic, martensitic and precipitation hardenable) and of decontamination for nickel or cobalt base alloys.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN ISO 9227, Aerospace series — Corrosion tests in artificial atmospheres — Salt spray tests

3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

 ISO Online browsing platform: available at http://www.iso.org/obp
 IEC Electropedia: available at http://www.electropedia.org/
4 Purpose of process

To improve the corrosion resistance characteristics of a part after such treatments as machining, forming,

tumbling and shot peening by removing foreign metal contamination due to these operations.

Passivation shall not be used on castings, welded or brazed parts, carburized or nitrided surfaces nor on

parts with mating surfaces when entrapment of acids may occur.
5 Applicability and limitations of the process
This specification is applicable for the following corrosion resisting alloys:
 austenitic steels;
 austenitic ferritic steels;
 martensitic chromium steels;
 ferritic steels;
 austenitic precipitation hardenable steels;
 martensitic precipitation hardenable steels;
 heat resisting nickel or cobalt base alloys.
This specification is not applicable for:
 unalloyed or low-alloyed carbon steel;
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SIST EN 2516:2020
EN 2516:2020 (E)
 powder metallurgy alloys;

 surface modified steel i.e. with case-hardened, carburized or nitrided surfaces;

 soldered or brazed alloys;

 items containing joints and cavities where it is not possible to mask prior to passivation or to ensure

complete removal of the passivation solution.
6 Information for the processor
 Designation, refer to Clause 13;
 reference of the material standard and its metallurgical condition;
 process schedule, if necessary ;
 areas to be masked.
7 Condition of the parts prior to processing
Fabrication of the parts shall have been completed before treatment.
8 Pre-treatments

All parts shall be submitted to a surface preparation process. The surface preparation process may

include mechanical and/or chemical and/or electrochemical methods, singly or in combination.

Necessary sub steps (e.g. cleaning, degreasing, descaling, abrasive blasting, activation, pickling, rinsing,

drying, masking) depend on the degree of contamination. Although descaling or other steps may be

necessary before passivation can be effective, these steps shall be indicated in the process instructions.

The composition of appropriate surface preparation chemicals may depend on the grade of the corrosion

resisting steel to be treated. Alloying elements, contaminations and mechanical processing may influence

the sensitivity of the
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